How to configure PTR record for my VM in Windows Azure

Question

Hello,

I need to create a PTR record for my VM in Windows Azure. It has a static IP, for example, 123.456.789.012

I went to this URL: https://resources.azure.com/

And navigated until I have found publicIPAddress. Initially, this JSON appeared there:

"dnsSettings": {
  "domainNameLabel": "(String)",
  "fqdn": "(String)",
  "reverseFqdn": "(String)"
},

I have replaced it by:

"dnsSettings": {
  "domainNameLabel": "exampleapp",
  "fqdn": "example.cl",
  "reverseFqdn": "example.cl"
},

Finally, when I pressed PUT button, this error appeared:

{
  "error": {
    "code": "ReverseFqdnDoesNotBelongToSubscription",
    "message": "ReverseFqdn example.cl that PublicIPAddress MyVM-ip is trying to use does not belong to subscription a7494537-8095-4a35-9662-111111111111. One of the following conditions need to be met to establish ownership: 1) ReverseFqdn matches fqdn of any public ip resource under the subscription; 2) ReverseFqdn resolves to the fqdn (through CName records chain) of any public ip resource under the subcription; 3) It resolves to the ip address (through CName and A records chain) of a static public ip resource under the subscription.",
    "details": []
  }
}

I am not sure what that error means. Can someone guide me in the right direction?

Thanks
Jaime

Answer 1

Maybe this is helpful:

Configure reverse DNS for services hosted in Azure

Regards
Andreas Baumgarten

(Please don't forget to Accept as answer if the reply is helpful)

Answer 2

Hello Andreas,

I have already read that page but I could not do that way, that is why I am asking for a guidance using https://resources.azure.com/ page.

Well.... with the page you gave me, I got stuck at the first step. After I installed PowerShell module and authenticated, I ran the command:

$pip = Get-AzPublicIpAddress -Name "PublicIp" -ResourceGroupName "MyGroup"

it returns successfully, however, the second instruction I ran was this:

PS > pip.DnsSettings = New-Object -TypeName "Microsoft.Azure.Commands.Network.Models.PSPublicIpAddressDnsSettings"
pip.DnsSettings : The term 'pip.DnsSettings' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ pip.DnsSettings = New-Object -TypeName "Microsoft.Azure.Commands.Netw ...
+ ~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (pip.DnsSettings:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

How can I solve it?

If I just run:

PS > $pip.DnsSettings.ReverseFqdn = "example.cl"
The property 'ReverseFqdn' cannot be found on this object. Verify that the property exists and can be set.
At line:1 char:1
+ $pip.DnsSettings.ReverseFqdn = "example.cl"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyNotFound

So, I am stuck everywhere. How can I solve this?

Thanks
Jaime

Answer 3

There is a $ missing in front of pip.setting in your script/line

Regards
Andreas

Answer 4

Sorry, I missed thr $ however, when I add with the $, I got the same error I got in https://resources.azure.com/ page and it is equal to the error I wrote in the question:

> Set-AzPublicIpAddress -PublicIpAddress $pip

Set-AzPublicIpAddress : ReverseFqdn example.cl. that PublicIPAddress MyVM-ip is trying to use does not belong to subscription a7494537-8095-4a35-9662-d9710282192c. One of the following conditions need to be met to establish ownership: 1) ReverseFqdn matches
fqdn of any public ip resource under the subscription; 2) ReverseFqdn resolves to the fqdn (through CName records chain) of any public ip resource under the subcription; 3) It resolves to the ip address (through CName and A records chain) of a static public ip resource
under the subscription.
StatusCode: 400
ReasonPhrase: Bad Request
ErrorCode: ReverseFqdnDoesNotBelongToSubscription
ErrorMessage: ReverseFqdn example.cl. that PublicIPAddress MyVM-ip is trying to use does not belong to subscription a7494537-8095-4a35-9662-d9710282192c. One of the following conditions need to be met to establish ownership: 1) ReverseFqdn matches fqdn of
any public ip resource under the subscription; 2) ReverseFqdn resolves to the fqdn (through CName records chain) of any public ip resource under the subcription; 3) It resolves to the ip address (through CName and A records chain) of a static public ip resource under
the subscription.
OperationID : 9a281fde-107e-49b3-9c5f-6345fe5d2c03
At line:1 char:1
+ Set-AzPublicIpAddress -PublicIpAddress $pip
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [Set-AzPublicIpAddress], NetworkCloudException
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.Network.SetAzurePublicIpAddressCommand

Any further suggestion?

Thanks
Jaime